中源地震脱水脆变机制的岩石学研究进展

夏阳, 张立飞^*

The Advance of Petrologic Mechanism of Dehydration Embrittlement in Intermediate-depth Earthquakes

Xia Yang, Zhang Lifei

图6 赞比亚中部发现的中源地震野外证据（a）图榴辉岩内, 石榴石被包裹在细粒绿辉石、针状金红石基质中；（b）（c）图基质中可见球粒陨石（spherulite）结构, 暗示了曾经假玄武玻璃的存在 [ 38 ]
Fig. 6 Field evidence of intermediate-depth earthquakes in central Zambia. （a）Large garnet Grt in fine-grained matrix of omphacite Omp and tiny rutile needles；（b）（c）Slightly brighter omphacite spherulites occurring dispersed in matrix implicate pre-existing pseudotachylytes [ 38 ]